EP1263575B1 - Film d'amortissement sonore multicouche et son procede de production - Google Patents

Film d'amortissement sonore multicouche et son procede de production Download PDF

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Publication number
EP1263575B1
EP1263575B1 EP01909643A EP01909643A EP1263575B1 EP 1263575 B1 EP1263575 B1 EP 1263575B1 EP 01909643 A EP01909643 A EP 01909643A EP 01909643 A EP01909643 A EP 01909643A EP 1263575 B1 EP1263575 B1 EP 1263575B1
Authority
EP
European Patent Office
Prior art keywords
layer
absorbing foil
foil according
lower layer
openings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP01909643A
Other languages
German (de)
English (en)
Other versions
EP1263575A1 (fr
Inventor
Torsten Rust
Ehrenfried Blümel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Automotive Components Group GmbH
Original Assignee
Dr Alois Stankiewicz GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7629106&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1263575(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dr Alois Stankiewicz GmbH filed Critical Dr Alois Stankiewicz GmbH
Publication of EP1263575A1 publication Critical patent/EP1263575A1/fr
Application granted granted Critical
Publication of EP1263575B1 publication Critical patent/EP1263575B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer

Definitions

  • the invention relates to a multilayer damping film or Entdröhnungsfolie with the features of the preamble of claim 1.
  • Damping foils or sound deadening films are used to deaden, i. for soundproofing, used by metal sheets.
  • damping films must be able to be inserted into the inside roof and side areas of a body and there adhere firmly and over the entire surface.
  • damping films are painted over.
  • the full-surface adhesion is achieved according to the prior art in that the steaming sheet facing side of the damping foil is provided with a hot melt adhesive and after applying the damping foil on the sheet to be damped a heat treatment is performed, which causes the melting of the hot melt adhesive and thus the achieved full-surface bonding.
  • such a damping film has been equipped magnetizable.
  • rod-shaped or strip-shaped metal parts have hitherto been introduced into the dampening sheet-facing side of the damping sheet (DE 38 25 494 A1) or are ferrite powders or the like magnetic or magnetizable pulverulent particles mixed into the damping sheet during their production (DE 34 27 916 A1).
  • Such equipped damping films adhere to the body panel during the heat treatment, either because of its own magnetic properties, or because of arranged on the other side of the sheet permanent magnets that attract the magnetizable particles in the damping foil and thus the entire damping foil.
  • the magnetic or magnetizable particles having facing the sheet to be damped facing layer has high basis weight and determines so that the total weight of the applied damping foil very much without this layer contributes significantly to the damping.
  • the part to be damped such as a body panel, facing lower layer has numerous through openings in the sense of perforation.
  • the lower layer may also be formed as an adhesive layer which achieves a non-destructive, but non-destructively removable layer, as is known per se from DE 35 10 932 A1 or EP 0 195 923 B1.
  • a sheet material forming the upper layer is laminated or applied in a different manner to a sheet material forming the lower layer after the perforation thereof. If an intermediate layer is provided, this is, before or after the perforation of the lower layer aufkaschieren on this.
  • the nonwoven material or the Kraft paper that forms the intermediate layer be adhesive coated on both sides.
  • Fig. 1 shows a perspective and exploded view of a damping foil 2 looking at the side facing a damping part 13 a facing the part to be damped facing "lower” layer 3 of the damping foil 2.
  • the damping foil 2 further facing away from the part to be damped "upper” layer 4 as well as a film-like intermediate layer 5 formed by non-woven or kraft paper between the layers 3 and 4 of the damping film 2.
  • On the side facing the part to be damped 13 may be applied an adhesive such as a hot melt adhesive 12 or a dispersion adhesive.
  • the lower layer 3 of the damping film 2 is formed at least in the region of this side 13 as an at least one temporary non-positive connection with the element to be damped reaching element.
  • magnetized or magnetizable particles for example in the sense of DIN 17470 and DIN 50470
  • ferrite powder are embedded in the material of the lower layer 3.
  • this lower layer has 3 openings 7, some of which are shown. These openings are expedient in the sense of perforations for easy production, the entire lower layer 3 passing through. Further, embossments 11 are advantageously provided in the side 13 of the lower layer 3, which are arranged such that they connect the openings 7. They serve to prevent in the heat treatment for activating the hot melt adhesive 12 that remain between the part to be damped and the side 13 of the layer 3 air pockets.
  • the surface pattern of the impressions 11 is not limited to the pattern shown in FIG. 1. It is essential that indentations 11 are provided for each of the openings 7.
  • the hole portion of the openings 7 is 5 to 30% of the lower layer 3.
  • the lower layer 3 has a thickness of 0.3 to 1.2 mm, preferably from 0.5 to 1 mm, and preferably consists of a bitumen or a Bitumen mixture with about 50 to 70% by weight having Ferrritpulveranteil.
  • the upper layer 4 of the damping foil 2, which does not have such magnetic or magnetizable particles and faces away from the part to be damped, is approximately 0.8 to 2 mm thick and expediently also consists of bitumen or an asphalt mixture. This upper layer 4 is firmly connected to the lower layer 3 having the openings 7, for example by gluing or laminating.
  • this intermediate layer 5 is of the order of 0.1 mm. It may be laminated on the lower layer 3 or glued, after which in turn the upper layer 4 is laminated or glued.
  • An intermediate layer 5 equipped on both sides is advantageous. As explained below with reference to FIGS. 2 and 4, the intermediate layer 5 can be continuous (FIG. 2) or likewise have openings 8 (FIG. 4).
  • the side facing away from the part to be damped 14 of the upper layer 4 of the damping film 2 is the so-called visible side, which should be painted over in many applications, especially in the damping of body panels. It may therefore expediently have a further covering layer 6 (FIGS. 2 and 3) which stabilizes the long-term behavior of this visible side 14.
  • This cover layer 6 may be formed by a per se known antiblock coating to avoid blocking during transport or storage, it may also be formed by a dispersion coating to reduce the visible to the outside effect of yellowing in light topcoats. However, this cover layer 6 is not required if neither a risk of blocking nor a yellowing hazard is to be feared.
  • FIG. 2 shows the application of the damping film 2 on a part to be damped, in particular a metal sheet 1.
  • an intermediate layer 5 is provided, which is not perforated. This prevents that material of the upper layer 4 can penetrate into the openings 7, which could occur when exposed to heat, this collapse in the outwardly facing visible side 14 in appearance.
  • This embodiment is of particular advantage if the two layers 3 and 4 are to be produced separately as sheet material and then laminated on one another.
  • the ferrite powder particles effecting the magnetic or magnetizable properties of the entire damping foil 2 are represented by dots 10.
  • Ferrite powder particles are thus to be understood to mean only inclusions which can trigger the desired effect, namely the adhesion of the damping film 2 to the sheet 1 to be damped, at least during the heat treatment after the damping sheet 2 has been applied to the sheet 1 to achieve the firm connection by means of a hot melt adhesive as explained above.
  • This adhesion may be caused by the intrinsic magnetic property of these particles 10 or by the ability to co-operate with permanent magnets provided on the other side of the sheet 1.
  • this (usually only provisional) adhesion can also be completely or partially effected by a known so-called adhesive equipment of the lower layer 3.
  • This adhesive equipment which allows a frictional surface connection of the damping foil 2 with the metal sheet 1, wherein the damping foil 2, however, completely destructively removable again, is achieved in particular by the fact that the layer on the side facing the plate 1 side 13 and in the adjacent thereto Section consisting of a strongly sub-crosslinked polyurethane layer structure.
  • bitumen in particular oxidation bitumen
  • this can be achieved by admixing atactic propylene in a proportion of atactic polypropylene to bitumen of about 1: 3.
  • the viscosity in the melt at 180 ° C about 50.000mPa.s and more with a penetration value according to DIN 1995 between 15 and 55, preferably between 35 and 55.
  • FIG. 5 shows the result of a bending vibration test, measured according to DIN 53440 at a frequency of 200 Hz.
  • the lower layer 3 may be both adhesively equipped and provided with ferrite particles.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Laminated Bodies (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Claims (20)

  1. Film d'amortissement multicouches (2) destiné à amortir les bruits de structure (insonoriser) d'une pièce à amortir (1), comme une tôle, en particulier une tôle de carrosserie,
    dans lequel la couche inférieure (3) tournée vers la pièce à amortir (1) présente des propriétés qui conviennent pour faire adhérer le film d'amortissement (2) à la pièce à amortir (1), et la couche supérieure (4) opposée à la pièce à amortir (1) ne possède pas de propriété d'adhérence,
    caractérisé en ce que
    la couche inférieure (3) comprend de nombres ouvertures de passage (7) dotées d'un pourcentage d'ouvertures (pourcentage de trous) de 5 à 30% et
    en ce que la couche inférieure (3) possède une épaisseur d'approximativement 0, 3 mm à 1,2 mm et la couche supérieure (4) une épaisseur d'approximativement 0,8 mm à 2,0 mm.
  2. Film d'amortissement selon la revendication 1,
    Caractérisé en ce que
    la couche inférieure (3) sur la face (13) tournée vers la pièce (1) comprend des gaufrages (11) qui relient les ouvertures (7) les unes aux autres.
  3. Film d'amortissement selon la revendication 1 ou 2,
    caractérisé en ce que
    une couche intermédiaire (5) mince et du type film est prévue entre les couches inférieure et supérieure (3, 4).
  4. Film d'amortissement selon la revendication 3,
    caractérisé en ce que
    la couche intermédiaire (5) comprend des ouvertures (8) alignées sur les ouvertures (7) dans la couche inférieure (3).
  5. Film d'amortissement selon la revendication 3 ou 4,
    caractérisé en ce que
    la couche intermédiaire (5) est une couche de nontissé ou de papier kraft.
  6. Film d'amortissement selon l'une quelconque des revendications 3 à 5,
    caractérisé en ce que
    la couche intermédiaire (5) est pourvue de part et d'autre d'une couche adhésive destinée à relier les couches inférieure et supérieure (3, 4),
  7. Film d'amortissement selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    la couche inférieure (3) contient des particules magnétiques ou magnétisables (10).
  8. Film d'amortissement selon la revendication 7,
    caractérisé en ce que
    les particules (10) sont présentes dans un pourcentage de 50 à 70% en poids.
  9. Film d'amortissement selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce que
    la couche inférieure (3) comprend sur sa face (13) tournée vers la pièce (1) une couche d'adhésif à dispersion ou d'adhésif fusible (12).
  10. Film d'amortissement selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    la couche supérieure (4) comprend sur sa face (14) opposée à la pièce (1) un revêtement à dispersion, un revêtement d'antiblocage ou une couche de recouvrement de surfaces (6) similaire.
  11. Film d'amortissement selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce que
    le matériau de base des couches supérieure (4) et/ou inférieure (3) est un matériau en bitume.
  12. Film d'amortissement selon la revendication 2,
    caractérisé en ce que
    la couche intermédiaire possède une épaisseur d'approximativement 0,1 mm.
  13. Film d'amortissement selon l'une quelconque des revendications 1 à 12,
    caractérisé en ce que
    le film d'amortissement (2) est dimensionné de sorte que le facteur de perte s'élève à plus de 0,1 1 à 0 à 35...40°C, la masse superficielle s'élevant à moins de 5 kg/m2, de préférence à moins de 4,2 kg/m2.
  14. Film d'amortissement selon l'une quelconque des revendications 1 à 13,
    caractérisé en ce que
    pour déposer un film d'amortissement (2) adhésif, amovible sans détérioration mais provoquer une liaison par coopération de forces avec la pièce (1), la couche inférieure (3) comprend au moins sur sa section tournée vers la pièce (1) une structure de couche constituée d'un polyuréthane fortement sous-réticulé.
  15. Film d'amortissement selon la revendication 14,
    caractérisé en ce que
    la couche inférieure (3) est un mélange de bitumes, en particulier de bitumes d'oxydation et de polypropylènes atactiques (APP).
  16. Film d'amortissement selon la revendication 15,
    caractérisé par
    un rapport des polypropylènes atactiques sur les bitumes d'approximativement 1:3.
  17. Film d'amortissement selon la revendication 15 ou 16,
    caractérisé par
    une viscosité dans la masse fondue à 180°C ≥50000 mPa.s et un degré de pénétration selon la norme DIN 1995 compris entre 15 et 55, de préférence entre 35 et 55.
  18. Procédé de fabrication d'un film d'amortissement multicouches (2) selon l'une quelconque des revendications précédentes comprenant les étapes de
    fabrication d'une couche (3) qui convient pour adhérer à une pièce à amortir (1),
    perforation de cette couche (3) et
    application, en particulier contrecollage d'une autre couche supérieure (4) sur la couche inférieure (3) citée en premier.
  19. Procédé selon la revendication 18,
    caractérisé en ce que
    une couche intermédiaire mince et flexible (5) est appliquée, en particulier contrecollée sur la couche inférieure (3) citée en premier avant ou après la perforation.
  20. Procédé selon la revendication 18 ou 19,
    caractérisé par
    le gaufrage de renfoncements dans la couche inférieure (3) citée en premier sur sa face (13) opposée à celle-ci après l'application de la couche supérieure (4), de telle sorte que celles-ci relient les unes aux autres les ouvertures (7) formées par la perforation.
EP01909643A 2000-01-28 2001-01-17 Film d'amortissement sonore multicouche et son procede de production Revoked EP1263575B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10003810A DE10003810A1 (de) 2000-01-28 2000-01-28 Mehrschichtige Dämpfungsfolie sowie Verfahren zu deren Herstellung
DE10003810 2000-01-28
PCT/EP2001/000499 WO2001054897A1 (fr) 2000-01-28 2001-01-17 Film d'amortissement sonore multicouche et son procede de production

Publications (2)

Publication Number Publication Date
EP1263575A1 EP1263575A1 (fr) 2002-12-11
EP1263575B1 true EP1263575B1 (fr) 2007-06-06

Family

ID=7629106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01909643A Revoked EP1263575B1 (fr) 2000-01-28 2001-01-17 Film d'amortissement sonore multicouche et son procede de production

Country Status (6)

Country Link
US (1) US6953105B2 (fr)
EP (1) EP1263575B1 (fr)
JP (1) JP4180277B2 (fr)
DE (2) DE10003810A1 (fr)
ES (1) ES2288505T3 (fr)
WO (1) WO2001054897A1 (fr)

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EP2046606B1 (fr) * 2006-08-03 2010-07-07 Henkel AG & Co. KGaA Réduction de transfert de vibrations
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CA2820937C (fr) 2010-12-10 2017-10-10 Skydex Technologies, Inc. Amortissement cellulaire interdigite
US8796164B2 (en) 2010-12-28 2014-08-05 Cytec Technology Corp. Multilayer and composition gradient structures with improved damping properties
EP3001933B1 (fr) 2011-06-07 2018-06-06 Skydex Technologies, Inc. Coussin en couches lavable
WO2013032391A1 (fr) 2011-08-29 2013-03-07 Välinge Flooring Technology AB Système de verrouillage mécanique pour panneaux de plancher
US8935899B2 (en) 2012-02-02 2015-01-20 Valinge Innovation Ab Lamella core and a method for producing it
US8875464B2 (en) 2012-04-26 2014-11-04 Valinge Innovation Ab Building panels of solid wood
US9140010B2 (en) 2012-07-02 2015-09-22 Valinge Flooring Technology Ab Panel forming
DE102013216778A1 (de) * 2013-08-23 2015-02-26 Tesa Se Stanzling insbesondere zum dauerhaften Verschließen von Löchern
CA2919851C (fr) 2013-08-27 2019-08-20 Valinge Innovation Ab Procede pour produire un noyau de lamelle
US9868268B2 (en) * 2015-08-06 2018-01-16 Hydra Heating Industries, Llc. Magnetic clasps for insulation
US9914284B2 (en) * 2015-08-06 2018-03-13 Hydra Heating Industries, LLC Magnetic insulation
EP3670622B1 (fr) 2016-09-20 2022-03-30 Avery Dennison Corporation Bande multicouche
CN111163934A (zh) * 2017-10-02 2020-05-15 可乐丽塑料株式会社 具有大量通孔的减振片
US11059264B2 (en) 2018-03-19 2021-07-13 Avery Dennison Corporation Multilayer constrained-layer damping
PL3793819T3 (pl) 2018-05-17 2024-02-26 Avery Dennison Corporation Wielowarstwowy laminat tłumiący z częściowym pokryciem
CN113840699B (zh) 2019-03-05 2023-10-24 塞拉洛克创新股份有限公司 用于在板块元件中形成沟槽的方法以及相关镶板
US11377855B2 (en) 2019-03-25 2022-07-05 Ceraloc Innovation Ab Mineral-based panel comprising grooves and a method for forming grooves
MX2022008015A (es) 2019-12-27 2022-07-27 Ceraloc Innovation Ab Panel de construccion a base de termoplastico que comprende una capa de balance.

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Publication number Priority date Publication date Assignee Title
EP0195923A2 (fr) * 1985-03-26 1986-10-01 Dr. Alois Stankiewicz GmbH Système d'isolation adhésif
EP0285740A2 (fr) * 1987-04-08 1988-10-12 Rütgerswerke Aktiengesellschaft Feuille d'amortissement adhérant magnétiquement

Also Published As

Publication number Publication date
JP4180277B2 (ja) 2008-11-12
US6953105B2 (en) 2005-10-11
JP2003520704A (ja) 2003-07-08
WO2001054897A1 (fr) 2001-08-02
US20030132057A1 (en) 2003-07-17
DE10003810A1 (de) 2001-08-16
DE50112598D1 (de) 2007-07-19
EP1263575A1 (fr) 2002-12-11
ES2288505T3 (es) 2008-01-16

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